Locking and controlling means for double doors.



H. G. VOIGHT. 'LOGKI-NG AND CONTROLLING MEANS FOR DOUBLE DOORS. 7 APPLICATION FILED m. 12, 1913. 7 1,070,366, Patented Aug. 12, 1913.

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1 ,070,366. i Patented Aug. 12, 1913.

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H. G. VOIGHT. LOCKING AND CONTROLLING MEANS FOR DOUBLE DOORS.

APPLICATION FILED FEB. 12, 1913.

Patented Aug. 12, 1913.

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H. G. VOIGHT. LOCKING AND CONTROLLING MEANS FOR DOUBLE DOORS.

APPLICATION FILED FEB. 12, 1913.

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Patented Aug. 12, 1913.

UNTTE PATENT FFTC.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT.

LOCKING AND CONTROLLING- MEANS FOR DOUBLE DOORS.

Application filed February 12, 1913.

To all whom it may concern:

Be it known that I, HENRY G. VOIGHT, a citizen of the United States, residing at New Britain, Hartford county, State of Connecticut, have invented certain new and useful Improvements in Looking and Controlling Means for Double Doors, of which the following is a full, clear, and exact description.

This invention relates to locking and controlling means for swinging doors of the double fire door type and aims to provide locking means operable to lock both sections to each other and to the door casing, the locking means being rendered inoperative when the door sections are opened and being automatically operated upon closing of the door. Doors of this double swinging type always open outwardly and are generally selfclosing, being actuated to closed position either by spring hinges, overhead door closers or other suitable means. The active section of these doors or that carrying the interlocking mechanism, has an astragal attached to its outer face to overlap the adjacent meeting edges of the door sections and shut off all openings between said sections. It is very essential in such cases that means be provided, in case both door sections are opened outwardly at the same time, whereby the active door section is retarded from closing until the inactive door section has preceded it in its closing movement.

My present invention contemplates, therefore, the provision of such timing and con trolling means in conjunction with the locking means heretofore referred to. These locking and controlling means are further and fully described in detail in the following specification, taken in connection with the accompanying drawings forming part thereof and illustrating a preferable embodiment of my invention.

In these drawings: Figure 1 is a view in front elevation of two complemental swinging door sections and their casing embodying the present invention, the faces of the door being broken away to disclose the interior locking mechanism and the doors being shown in their closed locked position. Fig. 2 is a view similar to Fig. 1 but with the interlocking parts of the door sections moved to unlocked position. Fig. 3 is a top plan view of the door casing with the door sections in closed position, illustrating the stop mechanism employed. Fig. 4 is a simi- Specification of Letters Patent.

Patented Au 12,1913.

Serial No. 747,928.

lar view showing the door sections opened and the stop mechanism in operative position relative to the active section of the door. Fig. 5 is a view in edge elevation of the door casing with the door sections :closed and the stop mechanism inoperatively positioned. with the door sections opened and moving toward closed position.

Fig. 6 is a similar view but Referring to the drawings by numerals, 1 indicates the door casing and 2 and 3 the inactive and active hinged sections of a double door structure, these sections being hinged at their outer ends and having their free ends abutting when closed. The active door section 3 carries on its outer face an astragal 3 which, when the door sections are closed, overlaps the edge of the inactive section and shuts off all openings between the adjacent edges of said sections. Seated within the outer or swinging edge of the active section 3 is a lock frame 4, this frame extending substantially the entire height of the door. The frame 4 carries a plurality of guide brackets 5 in vertical alinement, these brackets serving to guide a bar 6 for operating the latch bolts The upper end of this bar is provided with a locking offset head 7 for the purpose hereinafter described. Rigidly secured to the bar 6 intermediate its ends and extending therefrom is a yoke member 8 which normally rests upon and is supported by a roll-back 9, which roll-back is mounted within a lock casing suitably carried by the lock frame 4. The hub of this roll-back is suitably connected with an operating handle not shown) on one side of the door so that the oscillation of the rollback will serve to move the yoke 8 upwardly to in turn effect a like movement of the operating bar 6, which bar is supported by its yoke resting upon said roll-back.

At a plurality of points longitudinally of the lock frame a plurality of latch bolts 12 are pivotally mounted as at 11, these latch bolts being operable through the bar 6. In the drawings, I am only illustrating the uppermost of these latch bolts, the structure and operation of each being the same. The bolt mechanism is of the general type shown in my Patent No. 1,047,900, dated December 17, 1912, wherein a plurality of spaced looking bolts are operable through a common operating bar corresponding to the bar 6 of the present invention. Each latch bolt 12 provided adjacent one end with a curved slot 13 which slot adjacent its outer edge is 'lorined with a shoulder 14. The operating bar (3 carries a plurality of pins 15, one for each latch bolt, which pins extend through the curved slotof each latch bolt. The weight of the operating bar normally tends to move its pins 15 downwardly in the cam slots 13 of the latch bolts, swinging said bolts on their pivots to project the same. hen the operating handle of the bar is turned to oscillate the roll-back t), the yoke 8 will be raised, moving the operating bar (3 with it; pins 15 ujnvm'dly, these pins rising against the curved edges of the latch bolts, which edges act as cams and by reason of their curvature, cause the latch bolts to be swung inwardly on their pivots from the projected position shown in ll 1 to the retracted po sition shown in Fig. 2. If the operating handle is released, the operating bar 6 will drop by gravity, swinging the latch bolts outwardly to projected position again. These latch bolts are preferably of the type illustrated in my pending application Serial No. 7%l5, 38l3, the locking shoulders 14L of their cam slots preventing the retract-ion of these bolts independently of their common operating bar inasmuch as pressure imparted to these bolts, as by the insertion of a. tool between the edge of one section and the bolt head, will cause the shoulders 14 to press against their cooperating studs 15 and move the operating bar 6 laterally, jamming it against the sides of its guiding brackets 5 and blocking it against upward bolt-retracting movement.

The inactive section 2 has inserted therewithin, a bolt frame 16 extending vertically of the edge of the section. This frame is provided with a plurality of spaced alined guide brackets 17 apertured to receive and guide a bolt shank 18 whose head 1!) is adapted to be projected upwardly into a socket 21 formed in a strike plate 22 seated in. the under face of the door casing 1. A pin 20 carried by the bolt shank 18 serves to limit its downward movement by engagement with the upper face of its lower guide bracket 17. The lower end of the bolt shank 18 is positioned relative to the upper latch bolt 12 of the active door section 3 and in such relation thereto that when this upper latch bolt moves outwardly to projected position, the upper edge of its head will engage the lower end of the bolt shank 1S and lift the same upwardly to project its locking head 19 in the socket 21 of the casing strike plate. It will be seen, therefore, that the projection of the latch bolts 12 serves not only to interlock the active and inactive door sections but also operates a casing bolt mechanism to lock said sections to the casing.

It is desirable to provide some means whereby the latch bolts 1.2 are held in their retracted position when the active door section is open, and whereby these latch l llib' may be projected upon the closing of said active section. I have, theretortprovided at the outer end of the lock lTPlllH} l, spaced ears 2;) between which is pivoteil the upper end of a locking dog 24 xvlmse head 25 is adapted to project upwardly beyond the up per or go of the door. The strike plate 22 seated in the under face of the door casing is flush at the point where the head 25 of this dog engages the same so that when the door is closed, the head 25 of the dog is forced inwardly, causing the dog to swing on its pivot. This dog 2 lis provided at one edge with a locking shoulder 26 positioned to engage under the offset head 7 of the operating bar 6 when the latter has been moved upwardly to bolt-retracting position. When the operating bar 6 is moved upwardly to retract the latch bolts and this section then moves upwardly to open position, the dog 24 will swing downwardly by gravity and bring its locking shoulder 26 beneath the olfset head 7 of this operating bar, locking the bar in its raised position and projecting the head 25 of the dog out beyond the upper edge of the bar. In order to insure this locking movement of the dog, a weight in the form of a bar 27 is pivoted thereto at a point below its point of pivotal. connection to the cars 22:) as at 28. This weight 27, therefore, tends to swing the dog 2 f in wardly and its head 25 upwardly and out beyond the upper edge of the door. lVhen this section of the door closes, however, the head of the dog will engage the :[lush face of the strike plate 22 and be moved inwardly, swinging its shoulder 26 out from beneath the offset head 7 of the operating bar and permitting said bar to drop by gravity, this movement of the bar projecting the latch bolts as heretofore described, and the projection of the upper latch bolt serving to move the casing bolt 18 upwardly into its socket in the strike plate 22.

When both sections of the door are swung open, the astragal carried by the active section makes it necessary for the inactive section to close before the active section. I have, therefore, provided automatically operable stop means arranged to hold the active section away from the casing sufficiently far to permit the inactive section to swing therebeyond and into closed position first, the stop means being inoperatively positioned when the inactive section is moved past the active section and toward door closed position. To this end, the inactive section 2 of the door is provided adjacent its upper edge with a bracket plate 29 from which a strike arm 30 extends upwardly to a point above the upper edge of the door and in line with the door casing. The outer face of the door casing is provided with spaced bracket plates 3l82 provided with bearings 3334 respectively in which is journaled arock shaft 35 spanning the adjacent meeting edges of the two door sections. This rock shaft adjacent the active door section end is provided with a depending stop arm 36 fixedly secured thereto, and adjacent its other end, with a crank arm 37 likewise fixedly secured thereto and carrying a trans versely extending pin 38 positioned in line with the strike arm 80 carried by the inactive door section. The stop arm 36 and the crank arm 87 are arranged at an angle to each other on the rock shaft, the stop arm 36 extending out from the door casing a relatively greater distance than the crank arm 37 and its pin 38. The weight of the stop arm is such that it is normally dropped by gravity to bring its outer end into the path of closing movement of the active door section. When the two door sections are both opened and then moved toward closed position, as under the impulse of a closer cylinder, the active door section will be arrested in its closing movement by the stop arm 36. The length of this arm is such that the active section will be so positioned that the inactive section may swing inwardly past its astragal. lVhen the inactive section has moved past the arrested active section, its strike arm 30 will engage the pin 38 of the crank arm 37 and rock the shaft 35, swinging the stop arm 36 upwardly out of the path of the active door section and permitting said door section to move to closed position. In moving the door sections to open position, the operating handle will, of course, have been actuated to swing the roll-back upwardly moving the operating bar 6 of the lock mechanism upwardly through the yoke 8 and retracting the latch bolts, as'has been heretofore described. When the active door section in so moving from open position passed from beneath the door casing, its locking dog swung downwardly to engage the offset locking head 7 of the operating bar 6, automatically locking said bar in its raised position and holding the latch bolts retracted. When the door sections move toward closed posi tion, the inactive section closes first by reason of the stop mechanism heretofore described, releasing the active door section and permitting it to close, the locking dog of the active section engaging the strike plate 22 and being swung thereby to release the operating bar 6 to permit the latter to drop by gravity and project the latch bolts. In swinging the uppermost latch bolt 12 outwardly and upwardly to projected position, the shank 18 of the casing bolt is engaged by the upper edge of this latch bolt 12 and moved upwardly into its socket 21 in the strike plate 22 of the casing, being held i such position by the cooperating latch boltand the weight of the operating bar 6. As these latch bolts cannot be moved to retracted position independently of the operating bar 6, the door sections cannot be unlocked and moved to open position except through the operating handle or other means under manual control.

lVhile I have herein described a specific embodiment of my invention, it should be understood that the same'may be altered in detail and relative arrangement of parts within the spirit of the invention and the scope of the appended claims.

WVhat I claim, therefore, and desire to secure by Letters Patent is:

1. In a device of the character described, two swinging door sect-ions, a cooperating door casing, lock mechanism carried by one section including a bolt member cooperating with the other section and arranged'to be projected to interlock said sections, and a casing lock mechanism carried by said other section and arranged to be actuated by said interlocking bolt when projected to lock said other section to said casing.

2. In a device of the character described, two swinging door sections, a cooperating door-casing, lock mechanism carried by one section including a manually controlled bolt member cooperating with the other section and arranged to be projected to interlock said sections, a casing bolt mechanism carried by said other section, and meansengaged by said interlocking bolt when projected, to operate said bolt mechanism to lock said other section to said casing.

8. In a device of the character described, two swinging door sections, a cooperating door casing, a lock mechanism carried by one door section including a bolt member arranged to be projected to interlock said sections, manually controlled means for retracting said bolt, means for retaining said bolt in retracted position when its door section is opened, and for releasing said bolt and projecting the same when said door sec tion is closed, and a casing lock mechanism carried by one of said door sections and including a bolt arranged to be operated by the interlocking projection of said bolt member to lock said other section to said door casing.

In a device of the character described, two swinging door sections, a cooperating door casing, a lock mechanism carried by one door section and including a bolt member adapted to be projected to interlock said sections, means normally tending to project said bolt, manually controlled means for retracting said bolt, means cooperating with said door casing and arranged to automatically retain said bolt in retracted position when its door section is opened, and arranged to automatically release said bolt when its door section is closed, a casing bolt mechanism carried by said other door section and including a bolt head adapted to be moved to lock its door section. to said 'asing, and means operatively connected. with said bolt head and positioned to be engageijl by said interlocking bolt when projected to move said bolt head into locking position.

1. In a device of the character described, two swinging door sections, a cooperating door casing, a gravity lock mecl'ianism carried by one door section including a belt member, and a reciprocating operating bar normally tending to project said bolt to interlock said door sections, manually controlled means :t'or operating said bar to re tract said bolt, means cooperating with. said door casing and arranged to automatically retain said operating bar in bolt retracted position when its door section is opened, and operated by said door casing to release said bar when said door section is closed and. a casing bolt mechanism carried by said other door section including a bolt head arranged to interlock its door section to said casing and a portion operatively connected with said head and positioned by said lock bolt when projected, to more said bolt head into locking engagement with said casing.

(3. In a device of the character described, two swinging door sections, a cooperating door casing, a gravity lock mechanism car ried by one door section iuclui'ling a bolt member, and a reciprocating operating bar normally tending to project said bolt to interlock said door sections, manually controlled means for operating said bar to r-e tract said bolt, means whereby said bolt locks itself against retraction independently of said operating bar, means cooperating with said door casing and arranged to automatically retain said op-e ating bar in bolt retracted position when its door section is opened, and operated by said door casing to release said bar when said door section is closed and a casing bolt mechanism carried by said other door section including a bolt hc'ad arranged to interlock its door section to said casing and said bolt mechanism norn'ially tending to hold said head in retracted position and having a portion operatively connected with said head and positioned by said lock bolt when projected, to more said bolt head into locking engage ment with said casing.

7. In a device of the character described, two swinging door sections, a cooperating door casing, lock mechanism carried by one section including a bolt member cooperat ing with the other section, and means arranged to be operated by said casing upon reaching door closed position to project. said bolt to interlock said sections, a casing lock mechanism carried by said other section and arranged to be actuated by said interlocking bolt when projected to lock said other section to said casing, and stop mechanism arranged to engage and hold the first of said sections during its closing movement until said other section has moved a predetermined distance toward closed position.

8. in a device of the character described, two swinging door sections, a cooperating door casing, lock mechanism carried by one door section including a bolt member arranged to be projected to interlock said sections, manually controlled. mean for retracting said bolt, means cooperating with said casing to retain said bolt in lGtllCQtl position, when its door section is opened and to release said bolt and project the same when said door section reaches closed posit A, means operable by the projection of said bolt to interlock said. sections whereby said sections are locked. to said door casing, and stop mechanism arranged to stop the 80 closing movement of said lock mechanismcarrying door section until the other of said door sections has moved a predetermined position toward closed position.

HENRY G. VOTGHT.

Gwnxnonmn A. JACKSON, Cniiniins E. ltcssnnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

